【摘要】 以大直径钢管为结构主体的钢管塔是一种很有发展潜力的新型塔。为减小塔体高度和减少占地 ,常需将钢管塔建于屋顶。大直径钢管是空间薄壁壳体 ,其结构分析设计与传统的杆系塔架有很大不同 ,可供参考的资料很少。当钢管塔建于屋顶时 ,由于钢管塔与其下部房屋存在相互作用 ,动力特性与直接建于地面有本质差别。采用有限单元法完成了屋顶钢管塔地震作用时程分析 ,得到了一些结论更多还原

【Abstract】 The large diameter steel tube tower(LDSTT) is one of the new type towers.In order to decrease height and site occupation,a LDSTTT often be built on a building Since large diameter steel tubes must be treated as thin walled shells,the structural analysis and design are quite different from that of the conventional towers,and little information is available.When built on a building,a significant difference can be observed in dynamic characteristics of the LDSTT because of the reaction between LDSTT and the building.Finite element method(FEM) is employed to carry out the time history analysis of LDSTT subjected to earthquake induced vibration.Important results are obtained.更多还原